chanelink logo
CHANELINK
English

Scientists build high-power cladding-pumped Raman fiber laser in 1.2 μm band

418
2024-01-31 13:58:14
See translation

Laser sources operating in the 1.2 μm band have some unique applications in photodynamic therapy, biomedical diagnostics, and oxygen sensing. In addition, they can be used as pump sources for mid-infrared optical parameter generation and visible light generation through frequency doubling.

Laser generation in the 1.2 μm band has been achieved by different solid-state lasers, including semiconductor lasers, diamond Raman lasers, and fiber lasers. Among these three types, fiber lasers are an excellent choice for generating 1.2 μm band lasers due to their simple structure, good beam quality, and flexible operation.

Researchers led by Professor Pu Zhou from the National University of Defense Technology in China are interested in high-power fiber lasers in the 1.2μm band. Most of the current high-power fiber lasers are ytterbium-doped fiber lasers in the 1 μm band, and the maximum output of the 1.2 μm band is limited to 10 watts.

Their research, titled "High-Power Tunable Raman Fiber Laser in the 1.2 μm Band," was published in Frontiers in Optoelectronics.

Their idea is to use the stimulated Raman scattering effect in passive optical fibers to obtain high-power laser generation in the 1.2μm band. The stimulated Raman scattering effect is a third-order nonlinear effect that converts photons to longer wavelengths.

By exploiting the stimulated Raman scattering effect in phosphorus-doped optical fiber, the researchers converted the high-power ytterbium-doped fiber in the 1 μm band to the 1.2 μm band. A Raman signal with a power of 735.8 W was obtained at 1252.7 nm, which is the highest output power ever reported for a 1.2 μm band fiber laser.

Source: Laser Network


Related Recommendations

  • Laser Swing Welding: Principles, Characteristics, and Applications

    Application backgroundLaser swing welding technology was born out of the urgent demand for welding quality and efficiency in modern manufacturing industry. Traditional welding technology has shortcomings in precision, strength, and complex structures, which has led to the rapid application of laser welding in various fields. However, it still has defects such as pores and cracks, and has limitatio...

    2024-12-30
    See translation

  • Additive Manufacturing Software Market 2025: Analysis, Data, and Forecasting

    In March 2025, Additive Manufacturing Research (AMR) released its latest 3D printing market research report, "AM Software Markets 2025: Analysis, Data, and Forecast," which provides a comprehensive and in-depth analysis of the 3D printing software industry. The latest research findings indicate that global revenue from additive manufacturing (AM) software is expected to grow from $2.44 billion in ...

    03-17
    See translation

  • IPG launches dual beam fiber laser for additive manufacturing applications

    Recently, American fiber laser giant IPG Photonics announced the launch of a new laser series specifically designed for the additive manufacturing field.The highlight of this series of lasers lies in its integration of IPG's unique dual beam technology, which can independently regulate and simultaneously emit core and ring beams, setting a new benchmark in accuracy, efficiency, and reliability.Ba...

    2024-11-25
    See translation

  • Implementing and studying non Hermitian topological physics using mode-locked lasers

    A mode-locked laser is an advanced laser that can generate very short optical pulses with durations ranging from femtoseconds to picoseconds. These lasers are widely used for studying ultrafast and nonlinear optical phenomena, but they have also been proven to be applicable to various technological applications.Researchers at the California Institute of Technology have recently been exploring the ...

    2024-03-27
    See translation

  • High performance optoelectronic device developer "Micro Source Photon" completes B+round financing

    Recently, Weiyuan Photon (Shenzhen) Technology Co., Ltd. (hereinafter referred to as "Weiyuan Photon") announced the completion of a B+round of financing, with investors including Yicun Capital, Chenfeng Capital, and Beijing Guoqian Investment. The specific amount has not been disclosed. According to its official website, MicroSource Photonics was founded in November 2018, with the main members...

    2024-07-23
    See translation